Car stop



Jan. 12, 1937. CLARKE 2,067,694

CAR STOP Filed Aug. 22, 1935 2 Sheets-Sheet 2 Patented Jan. 12, 1937UNITED STATES PATENT OFFICE CAR STOP Application August 22, 1935, SerialNo. 37,406

14 Claims.

This invention concerns a car stop of the type which is employed forblocking a car against movement along the track. Such devices are foundof especial use in mines, quarries, etc.,

where industrial cars are spotted for filling or emptying, and where thetrack is successively changed or extended as the loading or unloading ofsuccessive cars continues.

One of the features of the present invention,

' therefore, is the provision of a stop of this type which can bequickly and easily removed from the path of the car, so that the car maypass the stop, and which may be easily and quickly swung into positionfor arresting movement of the car,

together with means for preventing the displacement of the device from.its arresting position.

Another feature of the present invention is the provision of a car stopincluding a lock member which prevents movement of the device from itsarresting position as a result of contact of the miners foot, forexample, therewith, this locking device being associated with a stopstructure proper so that it is easily released.

A further feature of the present invention is 3 the provision of such adevice, comprising means to be clamped to the rail itself so that it maybe easily positioned and removed, and in a specific illustrative formthe invention also comprises symmetrical structures so that the devicemay be 5 clamped to the rail for preventing dislodgement of the deviceunder car impact from one or another direction according to theselective clamping of the device, while permitting easy removal of thedevice when it is desired to shift the same 35 along the track.

With these and other features as objects in view, as will appear in thecourse of the following specification and claims, an illustrative formof construction is set out on the accompanying 40 drawings, in which:

Figure 1 is an end elevation of the device as applied to a track rail,and in its arresting position.

Figure 2 is a cross-sectional view through the 45 rail and deviceshowing the position of the illustrative locking element in dotted lineswhen ready for locking and in full lines when raised for dis 55 Figure 6is a top elevation of the base block of the assembly; and Figure 7 is anend view of the same.

Figure 8 is an end view of the locking block; and Figure 9 is a rearview of the same.

Figure 10 is a view indicating the shape of the 5 wood block employedfor clamping the structure on a rail.

Figure 11 is a detail view of the pivot pin employed.

In these drawings, the structure is illustrated 10 as made of threecastings which are the base block B, the pivot block P, and the lockingblock L, which are supported with respect to the rail R and clamped inposition against longitudinal movement along the rail by a wedging woodblock 15 W. The pivot block P is mounted on the base block B by a pivotor fulcrum pin F (Fig. 1), so that the pivot block may swing to andfrom. the positions of Figs. 1 and 3.

Specifically, the illustrative form of the construction has the pivotblock P (Figs. 4 and 5) formed with a web plate I!) constituting anupright plate which is presented edgewise against the tread of the carwheel or against a low bumper thereof, etc. It will be noted from thefigures that the preferred arrangement of parts, based on the shape andsize of the rail, is such that the inner face (the face at the left inFig. 1) of the plate P is located outside the plane of the car wheelflange, so that this plate is not contacted by the flange, whereby alateral derailing pressure might be exerted upon the car and an unusuallateral pressure upon the stop device itself. In Fig. 1 the flange andtread portion of the car wheel D is shown in dotted lines for com- 5parison.

The major portion of the structure of the stop device is located outsidethe plane of the wheel flanges when in arresting position (Fig. 1) andoutsidethe rail when in non-arresting position (Fig. 3). The pivot blockP also has the triangular reinforcing webs H which are spacedlongitudinally from one another in the direction of length of the trackrail and are joined to the spaced foot portions l2 which rest upon therail (Fig. 1) when the device is in arresting position. Thesefootportions 12 have downwardly directed ears I3 with apertures M forreceiving the fulcrum pin F. The web plate ll) has a notch 15 extendingupwardly from its lower edge so that the notch is closed, so to speak,by the rail R when, the device is in arresting position. Extendingparallel to this notch are a pair of. ribs l6 which operate asstiffening and reinforcing structures for the web plate Ill, and also asguides 5 for the sliding movement of the locking block L, as will bedescribed hereinafter.

The base block B is shown in detail in Figs. 6 and '7 as having a bottomplate 20 which may be apertured or cut away for lightness. The plate 20is shown as being in the form of a trapezoid having at its lower base anupwardly and inwardly extending lug structure. 2! forengaging over oneedge of the base of the rail R (Fig l) being appropriately shaped forthat purpose. At the major base of the trapezoidal form, the plate 20 isjoined to an upstanding wall 22 having thereon two end posts 23, eachsurmounted by an ear 2! having an aperture 25 for the fulcrum pin F. Acentral post structure 26 is; than either of the posts 23 and is locatedsynhne'tricailly with respect to the transverse plane through the baseblock B, and is simmers-menses an upper structure 2'! having anaperturefifiined with;

the apertures 25 for receiving the fulcrum pin F. -It will be noted thatthe'su-rfaces the posts 23, 25 which are directed toward the lug sti iih*Zl are inclined 'with'respet tthe Wall -22, in a horiz'en'tal plane; w'prevraewedg s rates 23, 28'a 'f'o'r thew 1 week w. Prefer-my thesurfaces m'eet at' a ridge er isrge angle at the transverse plane ofsymmetry, so that the weed block W may be drivefn' i'n ire-m eitherdirection, whereby the device is capable of employmeh't' io'r resistingcar impaet from the opposite dire on, ahd the device nay b empieeauponeit r r'aii w'ithout any change in'its'arrangeineht or strut?{ture The base block also includes the locking lug 29 which 'is locl'tted a-b'hvefthe pivot-F and preferably has as ihclihfed {face-"3otoward herein.

locking block L is Shown "in detail in Figs. 3 and e a comprising a' pit tructure "35 "a able ring 4 (Figs. 1,f2 ,*and"3 by'which a mixer, forexample, may quickly and easily placebr remove the device with respectto its arresting position, The locking'bl'ock L has a relat1vly thinconnecting web 7H "joined to' a iiviiier retain-- his plate 412. The web41 "slides; 'guidedly within the "notchfii whi-le'the plate tfz sieceieaagam'st the outer surface of. 'the'pivot b'lock i? see Fig. forholding the locking bme'k'in position.

It will be notedthat th'eba'se brobk B; the'piifot blo'ck P and thelockin g' bloc'zk Lmay be easily and'strengl constructed as eastmgsysothe device is stiii and rigid against wear andfiiock and againsttheseve're conditionso'f use'in 'mines is i se I "Th'e devi'ce isassembled together by slipping the locking block into positionwithres'p'ecttothe pivot block P by engaging the w s-l innotch 1 5-. Theears [3, 2a, and 21 ar aligne-djtnerdlcru'm pin F introduced;andacott'er Xdn'se'rted to hold it in position. The hand'ri'ri'g 4t matepositioned at any time. Itis'prferredto have this ring "of; a"sufficient" size to rest agaih'stthe base block for easy grasping'b'y'h hd; whereby the operation of removingthe stop device may bequickly and easily effected,vif so'desired.

The structure thus ass emblediisfeasily cramped at a desired point onthe rail. This i-s'nuneby engaging the lugstructureZI over theirni'erf'edge of the foot flange oi the rail'and slipping the taperedWOO'd 13100]; W ihtb space 'htweh the rail web and the posts 23', 26,the blbck being introduced from a direction opposite to that in whichthe car is to be held. The wood block is then driven tightly intoposition by an axe or hammer. It will be'noted that the heads 24, 21have overhung shoulders 23a for engaging the upper outer edge of thewood block and preventing its rocking during the driving, or contactwith the surfaces of the ears, l3: and further it will be notedthatjthe;block-itself is{preferably conformed to fit the base of therailf .With the device thus secured to the rail, and 'l'o'cated in theposition of Fig. 3, for example, "the operation of moving it intoarresting position comprises merely raising it by grasping any avai ables'tiiu'cturafor even by kicking it with the io'ot and moving it towardthe position of ifig. 1. The pivot block P with the locking blocktheieon' iiioves about the axis of the fulcrum pin F toward the positionof Fig. 1. If the looking blockL slides downward by gravity until itsact 33 rests on the locking lug -29,"it is guided the curvedupper'surface of this locking lug 29 until the structure attainsSubstantially the pii'itihh'h'f -Fig. lg'at whieh tl'me the lockingblock sl'iiies' downward along the inclined inner su'rrace *3 "0f theing '29 and thus establishes tight -W'1igihfi 'fit thhrebh. It "will be"noted that 'it iS preferred to have fit occur-,"wnen the devibe is new}'Wl'thblit engagement of the feet 36 'With the rail R. provides for aconsiderable war "of the structures before any looseness 'develdps theflckiflg arrangement.

Thefd'Vi'ee is new in lockih'g position and any 'htaht 6f the ear 'wheeibr'dtheh'pbrtidh Of the therewith occurs against the ed'ge 'o'f -the webplate H1, and the c'ar'is' broug'ht' to a stand'still, the foi'iiVardeffort "of th'eear being absorbed in "the heme, and an tendency-hfmovement hf the 'base block-B is in a a direction tending to move it up'O'I'ito the woodblock W"'to' a greater ext'iitthis-wood-blbck servinga's -'a res-ilien t'-cl-amping iivice which may be easily knocked out attheatre hire.

hide T to l-I hOVEthe lock-ing device to -anonhiresti-n'g position, itis merely required to pull upwa d and outward on the ring 1 0. Theinitial upwardpuil raises the locking block L'uritil the curved outerend-of its foot 3'6 is 'free-o'f'the lockihfil'll 3 9 (Tu l-lilill'e'poSltlOn OfFigflZ) and then the cfon-t n'ued upward andoutWard-pull on ring TH] eaii'se's' the p'ivot block'Pwith thelockingblock L thereon to swing in'a clockwise direction ('a'rrow in Fig; '2)into the 1 position shown in Fig. *3 in which it is free of the rail13,. Itwillbe noted the po'sitionof 'Fig; 3 that the locking lu'g 29 andthe-central per-non 21 or the base block B are positioned in the path"of sliding movement tithe locking lug L, and"more'partii1larly withrespect to the foot 36 thereofQsothat theparts "cannot be'cbmedisassembled in this position.

It' will be noted that this ear stop can be easily and quickly fixedtothe rail against moverne'nt therea'long by the use '-o'f-'t'he woodenwedge. seen wedges are easily manufactured for replace ent purposesatthe mine; *and can be any time it is desired toxemove and reposition"shaped a'n'cl'formed by the miner himself,"a'sfhe either rail by awedge which is introduced into the same from the direction opposite tothat of approach of a car, so that the impact of the car against thestop members merely serves to drive the base member more tightly againstits wedge. Hence the device may be used on either rail and for theapproach of the car in either direction.

As the device has its operating parts located outside the rail, it maybe brought into position and removed without the exposure of any part ofthe miners body in the path of the car and without danger of mutilation.In particular, it will be noted that the upright edges of the stopmember P, in the form illustrated in Fig. 4, permit engagement with thecar wheel at a point in the horizontal plane through the wheel axis, andhence a pull on the ring 40 in this illustrative device permits therelease of the lock and then a disengagement of the stop block P, evenwhen the car is fully loaded and resting against the device; and inparticular, that this operation can be performed without the minerexposing any part of his body in the path of the car.

The miner can position the stop upon the rail by swinging it by a pullupon the ring 40, the locking member L then being engaged with andriding on the projection 29 of the base block, and then the miner canquickly place the stop in position by giving the pivoted parts asufficient momentum to carry the locking member over into engagementwith the top of the rail, whereupon a gravitational downward movement ofthe locking block L will cause it to engage and hold the parts firmly.

When the device is disengaged and brought to non-arresting position, itis located outside the rail and below the clearance of the car and ofmining machines--a matter of importance, as mining machines ordinarilyhave parts extending lower than the cars, particularly between therails. Hence the device may be used as an end stop at the end of therail.

It is obvious that the invention is not limited solely to theillustrative form shown, but that it may be employed in many ways withinthe scope of the appended claims.

I claim:

1. A car stop comprising a base member, a stop member pivotally mountedon the base member for movement to and from arresting position, andgravity-operated locking means for maintaining the stop member inarresting position.

2. A car stop comprising a base member, a stop member pivotally mountedon the base member for movement toand from arresting position, andlocking means including a sliding member operated by gravity intolocking position during the movement of the stop member into arrestingposition for maintaining the stop member in such arresting position.

3. A car stop comprising a base member and means for securing the sameto a rail, a horizontal pivot supported by said base member parallel tothe rail, a stop member mounted on the pivot for movement to and fromarresting position on said rail, and a lock member carried by said stopmember and operated by gravity when the stop member is in arrestingposition for maintaining it therein.

4. A car stop comprising a base member having a rail-engaging portionand wedging surfaces thereon opposite the rail engaged with saidportion, a wooden wedging member engageable with the rail and surfacesfor securing the base member to the rail, a stop member pivotallymounted on said base member, locking means carried by said stop memberfor maintaining the same in arresting position and movable betweenlocking and non-locking position in a direction substantially at rightangles to the axis of the pivot mounting, and manually engageable meansconnected with the locking means for retracting the same from locking tonon-locking position and thereafter effecting a movement of the stopmember toward non-arresting position.

5. A car stop comprising a base member, a stop member pivoted thereto,and a wedging device;

said base member having a structure extending parallel to the rail andopposite to the same in .a horizontal plane, said structure having apair of wedging surfaces having a small angle of convergence toward therail from one end of the structure and the other surface having a smallangle of convergence toward the rail from the other end of the structureso that the wedging device may be employed between said surfaces and therail by introduction at the end remote from the direction of approach ofthe car.

6. A car stop comprising a base member having a part extending beneaththe rail and upstanding parts inside and outside the rail, wedging meansengaged with the rail and with at least one said upstanding part forfixing the base member against movement along the rail, said upstandingparts including overhanging portions extending toward the rail andengaged when the wedging means is in position whereby to prevent thebase member from dropping, and a stop member movably connected with thebase member and movable to and from arresting position.

7. A car stop comprising a base member, a stop member pivoted on thebase member, and a locking member carried by the stop member andgravitationally movable with respect thereto when the stop member is inarresting position, said base member having a part engaged by thelocking member when so moved, whereby the locking member operates toprevent disengagement of the stop member from arresting position.

8. A car stop as in claim 7, and including a manually engageable memberconnected with the locking member for moving the same against gravity torelease it from locking engagement and thereafter operating for movingthe locking and stop members about the pivotal connection with the basemember and into the non-arrest ing position of the stop member.

9. A car stop comprising a base member, a stop member pivoted on thebase member, a locking member, interengaging means on the stop andlocking members for guided gravitational movement of the locking member,when the stop member is in arresting position, into locking positionbetween the stop and base members, and interengaging means on the baseand locking members for raising the locking member as the stop membermoves toward arresting position.

10. A car stop as in claim 9, in which said latter interengaging meansis constructed and arranged to prevent separation of the stop andlocking members when the stop member is in nonarresting position. i

11. A car stop comprising a base member en gaged with the inside of arail and extending beneath the rail and upwardly outside the rail, astop member pivotally mounted on the base member outside the rail, andwooden wedging means "engaged with the rail and with the upwardlyexbottom of the rail, said stop member including a part resting on therail when in arresting position and extending upwardly into the path ofa car for stoppingthe same,:saidstop member when in non-arrestingposition being located wholly outside the rail and below the clearanceof the car and of mining machines.

12. A car stop for a track rail comprising a base member, a stop memberpivo'tally'mo unted on the base member for movement to and fromarresting position, said base member including an upstanding portionabove the pivot mounting, and locking means connected to the stop memberand'movable relative thereto between a position in which it bearsagainst said upstanding portion for holding the stop member in arrestingposition and a position free of the said upstanding portion forpermitting the stop :member to be moved toand from arresting position.

13. A car stop as in claim 12, in which the locking means is movable ina plane substantially at right angles to the axis of the pivot mounting,andin which said upstanding portion has a surface for moving saidlocking means into position for movement into holding. position whilethe stop member iis being moved to arresting position.

14. A car stop comprising :a base member, a :stop memberipivoteilymounted on the base member for movement to and from arrestingposition. an upstanding portion on the base member having'thesurfacetoward the rail converg'ent downwardlyitoward the rail, andgravityopera'ted locking-means engaging with said surface formaintaining the stop member in arresting position, said convergentsurface being efiective to assure tight engagement of the locking means.

SAMUEL CLARKE.

